Harley-Davidson Inc.

U.S. stocks fell, sending the Dow Jones Industrial Average toward its biggest loss since June, amid disappointing results at companies from 3M Co. to DuPont Co. and as commodities erased their gain for the year.

U.S. stocks fell, reversing earlier gains, as the Federal Reserve’s pledge to provide additional support for the economy disappointed investors anticipating a more definitive sign of further monetary easing.